<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 2.0.16">
<title>sexpect(1)</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
<style>
/*! Asciidoctor default stylesheet | MIT License | https://asciidoctor.org */
/* Uncomment the following line when using as a custom stylesheet */
/* @import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700"; */
html{font-family:sans-serif;-webkit-text-size-adjust:100%}
a{background:none}
a:focus{outline:thin dotted}
a:active,a:hover{outline:0}
h1{font-size:2em;margin:.67em 0}
b,strong{font-weight:bold}
abbr{font-size:.9em}
abbr[title]{cursor:help;border-bottom:1px dotted #dddddf;text-decoration:none}
dfn{font-style:italic}
hr{height:0}
mark{background:#ff0;color:#000}
code,kbd,pre,samp{font-family:monospace;font-size:1em}
pre{white-space:pre-wrap}
q{quotes:"\201C" "\201D" "\2018" "\2019"}
small{font-size:80%}
sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
sup{top:-.5em}
sub{bottom:-.25em}
img{border:0}
svg:not(:root){overflow:hidden}
figure{margin:0}
audio,video{display:inline-block}
audio:not([controls]){display:none;height:0}
fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
legend{border:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
button,input{line-height:normal}
button,select{text-transform:none}
button,html input[type=button],input[type=reset],input[type=submit]{-webkit-appearance:button;cursor:pointer}
button[disabled],html input[disabled]{cursor:default}
input[type=checkbox],input[type=radio]{padding:0}
button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
textarea{overflow:auto;vertical-align:top}
table{border-collapse:collapse;border-spacing:0}
*,::before,::after{box-sizing:border-box}
html,body{font-size:100%}
body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;line-height:1;position:relative;cursor:auto;-moz-tab-size:4;-o-tab-size:4;tab-size:4;word-wrap:anywhere;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
a:hover{cursor:pointer}
img,object,embed{max-width:100%;height:auto}
object,embed{height:100%}
img{-ms-interpolation-mode:bicubic}
.left{float:left!important}
.right{float:right!important}
.text-left{text-align:left!important}
.text-right{text-align:right!important}
.text-center{text-align:center!important}
.text-justify{text-align:justify!important}
.hide{display:none}
img,object,svg{display:inline-block;vertical-align:middle}
textarea{height:auto;min-height:50px}
select{width:100%}
.subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0}
a{color:#2156a5;text-decoration:underline;line-height:inherit}
a:hover,a:focus{color:#1d4b8f}
a img{border:0}
p{line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
p aside{font-size:.875em;line-height:1.35;font-style:italic}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
h1{font-size:2.125em}
h2{font-size:1.6875em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
h4,h5{font-size:1.125em}
h6{font-size:1em}
hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em}
em,i{font-style:italic;line-height:inherit}
strong,b{font-weight:bold;line-height:inherit}
small{font-size:60%;line-height:inherit}
code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
ul,ol,dl{line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
ul,ol{margin-left:1.5em}
ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0}
ul.square li ul,ul.circle li ul,ul.disc li ul{list-style:inherit}
ul.square{list-style-type:square}
ul.circle{list-style-type:circle}
ul.disc{list-style-type:disc}
ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
dl dt{margin-bottom:.3125em;font-weight:bold}
dl dd{margin-bottom:1.25em}
blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
h1{font-size:2.75em}
h2{font-size:2.3125em}
h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
h4{font-size:1.4375em}}
table{background:#fff;margin-bottom:1.25em;border:1px solid #dedede;word-wrap:normal}
table thead,table tfoot{background:#f7f8f7}
table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
table tr.even,table tr.alt{background:#f8f8f7}
table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{line-height:1.6}
h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
.center{margin-left:auto;margin-right:auto}
.stretch{width:100%}
.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
.clearfix::after,.float-group::after{clear:both}
:not(pre).nobreak{word-wrap:normal}
:not(pre).nowrap{white-space:nowrap}
:not(pre).pre-wrap{white-space:pre-wrap}
:not(pre):not([class^=L])>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background:#f7f7f8;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed}
pre{color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;line-height:1.45;text-rendering:optimizeSpeed}
pre code,pre pre{color:inherit;font-size:inherit;line-height:inherit}
pre>code{display:block}
pre.nowrap,pre.nowrap pre{white-space:pre;word-wrap:normal}
em em{font-style:normal}
strong strong{font-weight:400}
.keyseq{color:rgba(51,51,51,.8)}
kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background:#f7f7f7;border:1px solid #ccc;border-radius:3px;box-shadow:0 1px 0 rgba(0,0,0,.2),inset 0 0 0 .1em #fff;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
.keyseq kbd:first-child{margin-left:0}
.keyseq kbd:last-child{margin-right:0}
.menuseq,.menuref{color:#000}
.menuseq b:not(.caret),.menuref{font-weight:inherit}
.menuseq{word-spacing:-.02em}
.menuseq b.caret{font-size:1.25em;line-height:.8}
.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
b.button::before{content:"[";padding:0 3px 0 2px}
b.button::after{content:"]";padding:0 2px 0 3px}
p a>code:hover{color:rgba(0,0,0,.9)}
#header,#content,#footnotes,#footer{width:100%;margin:0 auto;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
#content{margin-top:1.25em}
#content::before{content:none}
#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
#header>h1:only-child,body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
#header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:flex;flex-flow:row wrap}
#header .details span:first-child{margin-left:-.125em}
#header .details span.email a{color:rgba(0,0,0,.85)}
#header .details br{display:none}
#header .details br+span::before{content:"\00a0\2013\00a0"}
#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
#header .details br+span#revremark::before{content:"\00a0|\00a0"}
#header #revnumber{text-transform:capitalize}
#header #revnumber::after{content:"\00a0"}
#content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
#toc>ul{margin-left:.125em}
#toc ul.sectlevel0>li>a{font-style:italic}
#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
#toc li{line-height:1.3334;margin-top:.3334em}
#toc a{text-decoration:none}
#toc a:active{text-decoration:underline}
#toctitle{color:#7a2518;font-size:1.2em}
@media screen and (min-width:768px){#toctitle{font-size:1.375em}
body.toc2{padding-left:15em;padding-right:0}
#toc.toc2{margin-top:0!important;background:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
#toc.toc2>ul{font-size:.9em;margin-bottom:0}
#toc.toc2 ul ul{margin-left:0;padding-left:1em}
#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
body.toc2.toc-right{padding-left:0;padding-right:15em}
body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
#toc.toc2{width:20em}
#toc.toc2 #toctitle{font-size:1.375em}
#toc.toc2>ul{font-size:.95em}
#toc.toc2 ul ul{padding-left:1.25em}
body.toc2.toc-right{padding-left:0;padding-right:20em}}
#content #toc{border:1px solid #e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;border-radius:4px}
#content #toc>:first-child{margin-top:0}
#content #toc>:last-child{margin-bottom:0}
#footer{max-width:none;background:rgba(0,0,0,.8);padding:1.25em}
#footer-text{color:hsla(0,0%,100%,.8);line-height:1.44}
#content{margin-bottom:.625em}
.sect1{padding-bottom:.625em}
@media screen and (min-width:768px){#content{margin-bottom:1.25em}
.sect1{padding-bottom:1.25em}}
.sect1:last-child{padding-bottom:0}
.sect1+.sect1{border-top:1px solid #e7e7e9}
#content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
#content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
#content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
#content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
#content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
details,.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
details{margin-left:1.25rem}
details>summary{cursor:pointer;display:block;position:relative;line-height:1.6;margin-bottom:.625rem;-webkit-tap-highlight-color:transparent}
details>summary::before{content:"";border:solid transparent;border-left:solid;border-width:.3em 0 .3em .5em;position:absolute;top:.5em;left:-1.25rem;transform:translateX(15%)}
details[open]>summary::before{border:solid transparent;border-top:solid;border-width:.5em .3em 0;transform:translateY(15%)}
details>summary::after{content:"";width:1.25rem;height:1em;position:absolute;top:.3em;left:-1.25rem}
.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
.paragraph.lead>p,#preamble>.sectionbody>[class=paragraph]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
.admonitionblock>table td.icon{text-align:center;width:80px}
.admonitionblock>table td.icon img{max-width:none}
.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6);word-wrap:anywhere}
.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
.exampleblock>.content{border:1px solid #e6e6e6;margin-bottom:1.25em;padding:1.25em;background:#fff;border-radius:4px}
.exampleblock>.content>:first-child{margin-top:0}
.exampleblock>.content>:last-child{margin-bottom:0}
.sidebarblock{border:1px solid #dbdbd6;margin-bottom:1.25em;padding:1.25em;background:#f3f3f2;border-radius:4px}
.sidebarblock>:first-child{margin-top:0}
.sidebarblock>:last-child{margin-bottom:0}
.sidebarblock>.content>.title{color:#7a2518;margin-top:0;text-align:center}
.exampleblock>.content>:last-child>:last-child,.exampleblock>.content .olist>ol>li:last-child>:last-child,.exampleblock>.content .ulist>ul>li:last-child>:last-child,.exampleblock>.content .qlist>ol>li:last-child>:last-child,.sidebarblock>.content>:last-child>:last-child,.sidebarblock>.content .olist>ol>li:last-child>:last-child,.sidebarblock>.content .ulist>ul>li:last-child>:last-child,.sidebarblock>.content .qlist>ol>li:last-child>:last-child{margin-bottom:0}
.literalblock pre,.listingblock>.content>pre{border-radius:4px;overflow-x:auto;padding:1em;font-size:.8125em}
@media screen and (min-width:768px){.literalblock pre,.listingblock>.content>pre{font-size:.90625em}}
@media screen and (min-width:1280px){.literalblock pre,.listingblock>.content>pre{font-size:1em}}
.literalblock pre,.listingblock>.content>pre:not(.highlight),.listingblock>.content>pre[class=highlight],.listingblock>.content>pre[class^="highlight "]{background:#f7f7f8}
.literalblock.output pre{color:#f7f7f8;background:rgba(0,0,0,.9)}
.listingblock>.content{position:relative}
.listingblock code[data-lang]::before{display:none;content:attr(data-lang);position:absolute;font-size:.75em;top:.425rem;right:.5rem;line-height:1;text-transform:uppercase;color:inherit;opacity:.5}
.listingblock:hover code[data-lang]::before{display:block}
.listingblock.terminal pre .command::before{content:attr(data-prompt);padding-right:.5em;color:inherit;opacity:.5}
.listingblock.terminal pre .command:not([data-prompt])::before{content:"$"}
.listingblock pre.highlightjs{padding:0}
.listingblock pre.highlightjs>code{padding:1em;border-radius:4px}
.listingblock pre.prettyprint{border-width:0}
.prettyprint{background:#f7f7f8}
pre.prettyprint .linenums{line-height:1.45;margin-left:2em}
pre.prettyprint li{background:none;list-style-type:inherit;padding-left:0}
pre.prettyprint li code[data-lang]::before{opacity:1}
pre.prettyprint li:not(:first-child) code[data-lang]::before{display:none}
table.linenotable{border-collapse:separate;border:0;margin-bottom:0;background:none}
table.linenotable td[class]{color:inherit;vertical-align:top;padding:0;line-height:inherit;white-space:normal}
table.linenotable td.code{padding-left:.75em}
table.linenotable td.linenos{border-right:1px solid;opacity:.35;padding-right:.5em}
pre.pygments .lineno{border-right:1px solid;opacity:.35;display:inline-block;margin-right:.75em}
pre.pygments .lineno::before{content:"";margin-right:-.125em}
.quoteblock{margin:0 1em 1.25em 1.5em;display:table}
.quoteblock:not(.excerpt)>.title{margin-left:-1.5em;margin-bottom:.75em}
.quoteblock blockquote,.quoteblock p{color:rgba(0,0,0,.85);font-size:1.15rem;line-height:1.75;word-spacing:.1em;letter-spacing:0;font-style:italic;text-align:justify}
.quoteblock blockquote{margin:0;padding:0;border:0}
.quoteblock blockquote::before{content:"\201c";float:left;font-size:2.75em;font-weight:bold;line-height:.6em;margin-left:-.6em;color:#7a2518;text-shadow:0 1px 2px rgba(0,0,0,.1)}
.quoteblock blockquote>.paragraph:last-child p{margin-bottom:0}
.quoteblock .attribution{margin-top:.75em;margin-right:.5ex;text-align:right}
.verseblock{margin:0 1em 1.25em}
.verseblock pre{font-family:"Open Sans","DejaVu Sans",sans-serif;font-size:1.15rem;color:rgba(0,0,0,.85);font-weight:300;text-rendering:optimizeLegibility}
.verseblock pre strong{font-weight:400}
.verseblock .attribution{margin-top:1.25rem;margin-left:.5ex}
.quoteblock .attribution,.verseblock .attribution{font-size:.9375em;line-height:1.45;font-style:italic}
.quoteblock .attribution br,.verseblock .attribution br{display:none}
.quoteblock .attribution cite,.verseblock .attribution cite{display:block;letter-spacing:-.025em;color:rgba(0,0,0,.6)}
.quoteblock.abstract blockquote::before,.quoteblock.excerpt blockquote::before,.quoteblock .quoteblock blockquote::before{display:none}
.quoteblock.abstract blockquote,.quoteblock.abstract p,.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{line-height:1.6;word-spacing:0}
.quoteblock.abstract{margin:0 1em 1.25em;display:block}
.quoteblock.abstract>.title{margin:0 0 .375em;font-size:1.15em;text-align:center}
.quoteblock.excerpt>blockquote,.quoteblock .quoteblock{padding:0 0 .25em 1em;border-left:.25em solid #dddddf}
.quoteblock.excerpt,.quoteblock .quoteblock{margin-left:0}
.quoteblock.excerpt blockquote,.quoteblock.excerpt p,.quoteblock .quoteblock blockquote,.quoteblock .quoteblock p{color:inherit;font-size:1.0625rem}
.quoteblock.excerpt .attribution,.quoteblock .quoteblock .attribution{color:inherit;font-size:.85rem;text-align:left;margin-right:0}
p.tableblock:last-child{margin-bottom:0}
td.tableblock>.content{margin-bottom:1.25em;word-wrap:anywhere}
td.tableblock>.content>:last-child{margin-bottom:-1.25em}
table.tableblock,th.tableblock,td.tableblock{border:0 solid #dedede}
table.grid-all>*>tr>*{border-width:1px}
table.grid-cols>*>tr>*{border-width:0 1px}
table.grid-rows>*>tr>*{border-width:1px 0}
table.frame-all{border-width:1px}
table.frame-ends{border-width:1px 0}
table.frame-sides{border-width:0 1px}
table.frame-none>colgroup+*>:first-child>*,table.frame-sides>colgroup+*>:first-child>*{border-top-width:0}
table.frame-none>:last-child>:last-child>*,table.frame-sides>:last-child>:last-child>*{border-bottom-width:0}
table.frame-none>*>tr>:first-child,table.frame-ends>*>tr>:first-child{border-left-width:0}
table.frame-none>*>tr>:last-child,table.frame-ends>*>tr>:last-child{border-right-width:0}
table.stripes-all tr,table.stripes-odd tr:nth-of-type(odd),table.stripes-even tr:nth-of-type(even),table.stripes-hover tr:hover{background:#f8f8f7}
th.halign-left,td.halign-left{text-align:left}
th.halign-right,td.halign-right{text-align:right}
th.halign-center,td.halign-center{text-align:center}
th.valign-top,td.valign-top{vertical-align:top}
th.valign-bottom,td.valign-bottom{vertical-align:bottom}
th.valign-middle,td.valign-middle{vertical-align:middle}
table thead th,table tfoot th{font-weight:bold}
tbody tr th{background:#f7f8f7}
tbody tr th,tbody tr th p,tfoot tr th,tfoot tr th p{color:rgba(0,0,0,.8);font-weight:bold}
p.tableblock>code:only-child{background:none;padding:0}
p.tableblock{font-size:1em}
ol{margin-left:1.75em}
ul li ol{margin-left:1.5em}
dl dd{margin-left:1.125em}
dl dd:last-child,dl dd:last-child>:last-child{margin-bottom:0}
ol>li p,ul>li p,ul dd,ol dd,.olist .olist,.ulist .ulist,.ulist .olist,.olist .ulist{margin-bottom:.625em}
ul.checklist,ul.none,ol.none,ul.no-bullet,ol.no-bullet,ol.unnumbered,ul.unstyled,ol.unstyled{list-style-type:none}
ul.no-bullet,ol.no-bullet,ol.unnumbered{margin-left:.625em}
ul.unstyled,ol.unstyled{margin-left:0}
ul.checklist>li>p:first-child{margin-left:-1em}
ul.checklist>li>p:first-child>.fa-square-o:first-child,ul.checklist>li>p:first-child>.fa-check-square-o:first-child{width:1.25em;font-size:.8em;position:relative;bottom:.125em}
ul.checklist>li>p:first-child>input[type=checkbox]:first-child{margin-right:.25em}
ul.inline{display:flex;flex-flow:row wrap;list-style:none;margin:0 0 .625em -1.25em}
ul.inline>li{margin-left:1.25em}
.unstyled dl dt{font-weight:400;font-style:normal}
ol.arabic{list-style-type:decimal}
ol.decimal{list-style-type:decimal-leading-zero}
ol.loweralpha{list-style-type:lower-alpha}
ol.upperalpha{list-style-type:upper-alpha}
ol.lowerroman{list-style-type:lower-roman}
ol.upperroman{list-style-type:upper-roman}
ol.lowergreek{list-style-type:lower-greek}
.hdlist>table,.colist>table{border:0;background:none}
.hdlist>table>tbody>tr,.colist>table>tbody>tr{background:none}
td.hdlist1,td.hdlist2{vertical-align:top;padding:0 .625em}
td.hdlist1{font-weight:bold;padding-bottom:1.25em}
td.hdlist2{word-wrap:anywhere}
.literalblock+.colist,.listingblock+.colist{margin-top:-.5em}
.colist td:not([class]):first-child{padding:.4em .75em 0;line-height:1;vertical-align:top}
.colist td:not([class]):first-child img{max-width:none}
.colist td:not([class]):last-child{padding:.25em 0}
.thumb,.th{line-height:0;display:inline-block;border:4px solid #fff;box-shadow:0 0 0 1px #ddd}
.imageblock.left{margin:.25em .625em 1.25em 0}
.imageblock.right{margin:.25em 0 1.25em .625em}
.imageblock>.title{margin-bottom:0}
.imageblock.thumb,.imageblock.th{border-width:6px}
.imageblock.thumb>.title,.imageblock.th>.title{padding:0 .125em}
.image.left,.image.right{margin-top:.25em;margin-bottom:.25em;display:inline-block;line-height:0}
.image.left{margin-right:.625em}
.image.right{margin-left:.625em}
a.image{text-decoration:none;display:inline-block}
a.image object{pointer-events:none}
sup.footnote,sup.footnoteref{font-size:.875em;position:static;vertical-align:super}
sup.footnote a,sup.footnoteref a{text-decoration:none}
sup.footnote a:active,sup.footnoteref a:active{text-decoration:underline}
#footnotes{padding-top:.75em;padding-bottom:.75em;margin-bottom:.625em}
#footnotes hr{width:20%;min-width:6.25em;margin:-.25em 0 .75em;border-width:1px 0 0}
#footnotes .footnote{padding:0 .375em 0 .225em;line-height:1.3334;font-size:.875em;margin-left:1.2em;margin-bottom:.2em}
#footnotes .footnote a:first-of-type{font-weight:bold;text-decoration:none;margin-left:-1.05em}
#footnotes .footnote:last-of-type{margin-bottom:0}
#content #footnotes{margin-top:-.625em;margin-bottom:0;padding:.75em 0}
.gist .file-data>table{border:0;background:#fff;width:100%;margin-bottom:0}
.gist .file-data>table td.line-data{width:99%}
div.unbreakable{page-break-inside:avoid}
.big{font-size:larger}
.small{font-size:smaller}
.underline{text-decoration:underline}
.overline{text-decoration:overline}
.line-through{text-decoration:line-through}
.aqua{color:#00bfbf}
.aqua-background{background:#00fafa}
.black{color:#000}
.black-background{background:#000}
.blue{color:#0000bf}
.blue-background{background:#0000fa}
.fuchsia{color:#bf00bf}
.fuchsia-background{background:#fa00fa}
.gray{color:#606060}
.gray-background{background:#7d7d7d}
.green{color:#006000}
.green-background{background:#007d00}
.lime{color:#00bf00}
.lime-background{background:#00fa00}
.maroon{color:#600000}
.maroon-background{background:#7d0000}
.navy{color:#000060}
.navy-background{background:#00007d}
.olive{color:#606000}
.olive-background{background:#7d7d00}
.purple{color:#600060}
.purple-background{background:#7d007d}
.red{color:#bf0000}
.red-background{background:#fa0000}
.silver{color:#909090}
.silver-background{background:#bcbcbc}
.teal{color:#006060}
.teal-background{background:#007d7d}
.white{color:#bfbfbf}
.white-background{background:#fafafa}
.yellow{color:#bfbf00}
.yellow-background{background:#fafa00}
span.icon>.fa{cursor:default}
a span.icon>.fa{cursor:inherit}
.admonitionblock td.icon [class^="fa icon-"]{font-size:2.5em;text-shadow:1px 1px 2px rgba(0,0,0,.5);cursor:default}
.admonitionblock td.icon .icon-note::before{content:"\f05a";color:#19407c}
.admonitionblock td.icon .icon-tip::before{content:"\f0eb";text-shadow:1px 1px 2px rgba(155,155,0,.8);color:#111}
.admonitionblock td.icon .icon-warning::before{content:"\f071";color:#bf6900}
.admonitionblock td.icon .icon-caution::before{content:"\f06d";color:#bf3400}
.admonitionblock td.icon .icon-important::before{content:"\f06a";color:#bf0000}
.conum[data-value]{display:inline-block;color:#fff!important;background:rgba(0,0,0,.8);border-radius:50%;text-align:center;font-size:.75em;width:1.67em;height:1.67em;line-height:1.67em;font-family:"Open Sans","DejaVu Sans",sans-serif;font-style:normal;font-weight:bold}
.conum[data-value] *{color:#fff!important}
.conum[data-value]+b{display:none}
.conum[data-value]::after{content:attr(data-value)}
pre .conum[data-value]{position:relative;top:-.125em}
b.conum *{color:inherit!important}
.conum:not([data-value]):empty{display:none}
dt,th.tableblock,td.content,div.footnote{text-rendering:optimizeLegibility}
h1,h2,p,td.content,span.alt,summary{letter-spacing:-.01em}
p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
p,blockquote,dt,td.content,span.alt,summary{font-size:1.0625rem}
p{margin-bottom:1.25rem}
.sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
.exampleblock>.content{background:#fffef7;border-color:#e0e0dc;box-shadow:0 1px 4px #e0e0dc}
.print-only{display:none!important}
@page{margin:1.25cm .75cm}
@media print{*{box-shadow:none!important;text-shadow:none!important}
html{font-size:80%}
a{color:inherit!important;text-decoration:underline!important}
a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
abbr[title]{border-bottom:1px dotted}
abbr[title]::after{content:" (" attr(title) ")"}
pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
thead{display:table-header-group}
svg{max-width:100%}
p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
#header,#content,#footnotes,#footer{max-width:none}
#toc,.sidebarblock,.exampleblock>.content{background:none!important}
#toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
body.book #header{text-align:center}
body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
body.book #header .details{border:0!important;display:block;padding:0!important}
body.book #header .details span:first-child{margin-left:0!important}
body.book #header .details br{display:block}
body.book #header .details br+span::before{content:none!important}
body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}
body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}
.listingblock code[data-lang]::before{display:block}
#footer{padding:0 .9375em}
.hide-on-print{display:none!important}
.print-only{display:block!important}
.hide-for-print{display:none!important}
.show-for-print{display:inherit!important}}
@media amzn-kf8,print{#header>h1:first-child{margin-top:1.25rem}
.sect1{padding:0!important}
.sect1+.sect1{border:0}
#footer{background:none}
#footer-text{color:rgba(0,0,0,.6);font-size:.9em}}
@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
</style>
</head>
<body class="manpage">
<div id="header">
<h1>sexpect(1) Manual Page</h1>
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<p>sexpect - Expect for Shells</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><strong>sexpect</strong> [<em>OPTION</em>] <em>SUB-COMMAND</em> [<em>OPTION</em>]</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p><strong>sexpect</strong> is another implementation of <strong>Expect</strong> which is specifically
designed for <strong>Shell</strong> scripts (sh, bash, ksh, zsh, &#8230;&#8203;).</p>
</div>
<div class="paragraph">
<p>Unlike <strong>Expect</strong> (for <strong>Tcl</strong>), <strong>Expect.pm</strong> (for <strong>Perl</strong>), <strong>Pexpect</strong> (for
<strong>Python</strong>) or other similar
<strong>Expect</strong> implementations, <strong>sexpect</strong> is not bound to any specific programming
language so <strong>sexpect</strong> can also be used with other programming languages as
long as they support running external commands.</p>
</div>
<div class="paragraph">
<p>Another interesting <strong>sexpect</strong> feature is that the spawned  process is
running in background.
You can attach to or detach from it as needed (as with <strong>GNU screen</strong>).</p>
</div>
<div class="paragraph">
<p><strong>sexpect</strong> is designed in the client/server model.
'<strong>sexpect spawn</strong>' starts the server (running as a daemon) and runs the
specified <em>PROGRAM</em> in background.
Other <strong>sexpect</strong> sub-commands (<strong>send</strong>, <strong>expect</strong>, <strong>wait</strong>, &#8230;&#8203;) communicate to the
server as client commands.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_global_options">GLOBAL OPTIONS</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">-debug | -d</dt>
<dd>
<p>Debug mode. The server (<strong>sexpect spawn</strong>) will run in foreground and more
information will be displayed.</p>
</dd>
<dt class="hdlist1">-help | --help | -h</dt>
<dd>
<p>Show brief <strong>sexpect</strong> help.</p>
</dd>
<dt class="hdlist1">-sock SOCKFILE | -s SOCKFILE</dt>
<dd>
<p>The socket file used for client/server communication.
This option is required for most sub-commands.</p>
<div class="paragraph">
<p>You can save the <em>SOCKFILE</em> in the <strong>SEXPECT_SOCKFILE</strong> environment variable so
you don&#8217;t need to specify the '<strong>-sock</strong>' option for each command.
For example:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>export SEXPECT_SOCKFILE=~/.sexpect-bash.sock
sexpect spawn bash --norc
... ...</pre>
</div>
</div>
<div class="paragraph">
<p>The socket file will be automatically created if it does not exist.</p>
</div>
</dd>
<dt class="hdlist1">-version | --version</dt>
<dd>
<p>Show <strong>sexpect</strong> version.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_sub_commands">SUB-COMMANDS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Sub-commands may have aliases. For example, '<strong>sexpect spawn</strong>' can also be
written as '<strong>sexpect sp</strong>' or '<strong>sexpect fork</strong>'.
For each sub-command, the supported aliases are listed in parentheses.</p>
</div>
<div class="sect2">
<h3 id="_spawn_sp_fork">spawn (sp, fork)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect spawn</strong> [<em>OPTION</em>] <em>PROGRAM</em> [<em>ARGS</em>]</dt>
<dd>
<p>The '<strong>spawn</strong>' sub-command will first make itself run as a background
server.
Then the server will start the specified <em>PROGRAM</em> on a new allocated pty.</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>spawn</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-append</dt>
<dd>
<p>See option '<strong>-logfile</strong>'.</p>
</dd>
<dt class="hdlist1">-autowait | -nowait</dt>
<dd>
<p>Turn on the '<strong>autowait</strong>' flag which by default is <strong>off</strong>.
See sub-command '<strong>set</strong>' for more information.</p>
</dd>
<dt class="hdlist1">-close-on-exit | -cloexit</dt>
<dd>
<p>Close the pty after the spawned process has exited even if the spawned
process&#8217;s child processes are still opening the pty. (Example: '<strong>ssh -f</strong>')</p>
</dd>
<dt class="hdlist1">-nonblock | -nb</dt>
<dd>
<p>Turn on the '<strong>nonblock</strong>' flag which by default is <strong>off</strong>.
See sub-command '<strong>set</strong>' for more information.</p>
</dd>
<dt class="hdlist1">-idle-close N | -idle N</dt>
<dd>
<p>The background server process will close the PTY and exit if there are
no client requests in the last <em>N</em> seconds.
Closing the PTY would usually cause the spawned process to receive
<strong>SIGHUP</strong> and be killed.</p>
</dd>
<dt class="hdlist1">-logfile FILE | -logf FILE | -log FILE</dt>
<dd>
<p>All output from the spawned process will be copied to the specified
<em>FILE</em>.
By default the <em>FILE</em> will be overwritten.
Use '<strong>-append</strong>' if you want to append to it.</p>
</dd>
<dt class="hdlist1">-nohup</dt>
<dd>
<p>Make the spawned process ignore <strong>SIGHUP</strong>. (Example: '<strong>ssh -f</strong>')</p>
</dd>
<dt class="hdlist1">-term TERM | -T TERM</dt>
<dd>
<p>Set the environment variable <strong>TERM</strong> for the spawned process.
This is useful when the <strong>TERM</strong> variable is not set (for example for jobs
started by <strong>cron</strong>/<strong>crond</strong> or <strong>atd</strong>).</p>
</dd>
<dt class="hdlist1">-timeout N | -t N</dt>
<dd>
<p>Set the default timeout for '<strong>sexpect expect</strong>'.
A negative value means no timeout.
The default value is <strong>-1</strong>.</p>
</dd>
<dt class="hdlist1">-ttl N</dt>
<dd>
<p>The background server process will close the PTY and exit <em>N</em> seconds
after the process is spawned.
Usually this would cause the process to receive <strong>SIGHUP</strong> and be killed.</p>
</dd>
<dt class="hdlist1">-zombie-idle N | -z N</dt>
<dd>
<p>When the spawned process closes the pty and exits, if there are
no client requests in the last <em>N</em> seconds the server will automatically
wait the spawned process and then exit. This helps avoid too many zombie
processes running around.
The default value is <strong>86400</strong> (24 hours). Use <strong>-1</strong> to disable this.</p>
</dd>
<dt class="hdlist1">Exit status: </dt>
<dd>
<p><strong>0</strong> will be returned if the background server has successfully started.
This does not necessarily mean the <em>PROGRAM</em> has been successfully
spawned (e.g. if the specified <em>PROGRAM</em> cannot be found).
Non-zero will be returned if the server fails to start for some reason.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_expect_exp_ex_x">expect (exp, ex, x)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect expect</strong> [<em>OPTION</em>] [ &lt;[<strong>-exact</strong>] | <strong>-glob</strong> | <strong>-re</strong>&gt; <em>PATTERN</em>] [<strong>-eof</strong>]</dt>
<dd>
<p>If the <em>PATTERN</em> is specified, it&#8217;ll wait until the <em>PATTERN</em> matches
the output of the spawned process.
If <strong>-eof</strong> is specified, it&#8217;ll wait until <strong>EOF</strong> (end-of-file) is seen.
If neither <em>PATTERN</em> nor <strong>-eof</strong> is specified, then it defaults to</p>
<div class="literalblock">
<div class="content">
<pre>expect -timeout 0 -re '.*'</pre>
</div>
</div>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>expect</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-cstring | -cstr | -c</dt>
<dd>
<p>C style backslash escapes would be recognized and replaced in <em>PATTERN</em>.
See sub-command '<strong>send</strong>' for the list of supported backslash escapes.</p>
</dd>
<dt class="hdlist1">-eof</dt>
<dd>
<p>Wait until <strong>EOF</strong> is seen from the spawned process.</p>
<div class="paragraph">
<p>Note that receiving <strong>EOF</strong> from the process does not necessarily mean the
process has exited.</p>
</div>
</dd>
<dt class="hdlist1">-exact PATTERN | -ex PATTERN</dt>
<dd>
<p>Match the <em>PATTERN</em> as an "exact" string.</p>
</dd>
<dt class="hdlist1">-glob PATTERN | -gl PATTERN</dt>
<dd>
<p>Match the <em>PATTERN</em> as a glob style pattern.</p>
<div class="paragraph">
<p>For convenience, the glob patterns also support <strong>^</strong> and <strong>$</strong> which match
the beginning and end of data currently in the internal matching buffer.</p>
</div>
</dd>
<dt class="hdlist1">-lookback N | -lb N</dt>
<dd>
<p>Show the most recent last <em>N</em> lines of output so you&#8217;d know where you
were last time.</p>
</dd>
<dt class="hdlist1">-nocase | -icase | -i</dt>
<dd>
<p>Ignore case when matching PATTERN. Used with '<strong>-exact</strong>', '<strong>-glob</strong>' or
'<strong>-re</strong>'.</p>
</dd>
<dt class="hdlist1">-re PATTERN</dt>
<dd>
<p>Match the <em>PATTERN</em> as an extended regular expression (<strong>ERE</strong>).</p>
</dd>
<dt class="hdlist1">-timeout N | -t N</dt>
<dd>
<p>Override the default '<strong>expect</strong>' timeout (see '<strong>spawn -timeout</strong>').</p>
</dd>
<dt class="hdlist1">Exit status: </dt>
<dd>
<p><strong>0</strong> will be returned if the match succeeds before timeout or <strong>EOF</strong>.</p>
<div class="paragraph">
<p>If the command fails, the '<strong>chkerr</strong>' sub-command can be used to check if the
failure is caused by <strong>EOF</strong> or <strong>TIMEOUT</strong>.
For example (in <strong>Bash</strong>):</p>
</div>
<div class="literalblock">
<div class="content">
<pre>sexpect expect -re foobar
ret=$?
if [[ $ret == 0 ]]; then
    # Cool we got the expected output
elif sexpect chkerr -errno $ret -is eof; then
    # EOF from the spawned process (most probably dead)
elif sexpect chkerr -errno $ret -is timeout; then
    # Timed out waiting for the expected output
else
    # Other errors
fi</pre>
</div>
</div>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_send_s">send (s)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect send</strong> [<em>OPTION</em>] [ [--] <em>STRING</em> | <strong>-file</strong> <em>FILE</em> | <strong>-env</strong> <em>NAME</em>] </dt>
<dd>
<p>The '<strong>send</strong>' sub-command sends data to the spawned process.</p>
<div class="paragraph">
<p>Note that the data to be sent must be less than <strong>1024</strong> bytes.
To send more data, use multiple '<strong>sexpect send</strong>' commands.</p>
</div>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>send</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-cstring | -cstr | -c </dt>
<dd>
<p>C language style backslash escapes would be recognized and replaced in
<em>STRING</em> before sending to the spawned process.</p>
<div class="paragraph">
<p>The following standard C language escapes are supported:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>\\ \a \b \f \n \r \t \v
\xHH \xH
\ooo \oo \o</pre>
</div>
</div>
<div class="paragraph">
<p>Other supported escapes:</p>
</div>
<div class="literalblock">
<div class="content">
<pre>\e \E : ESC, the escape char.
\cX   : CTRL-X, e.g. \cc will be converted to the CTRL-C char.</pre>
</div>
</div>
</dd>
<dt class="hdlist1">-enter | -cr </dt>
<dd>
<p>Append <strong>ENTER</strong> (<strong>\r</strong>) to the specified <em>STRING</em> before sending to the
spawned process.</p>
</dd>
<dt class="hdlist1">-file FILE | -f FILE </dt>
<dd>
<p>Send the content of the <em>FILE</em> to the spawned process.
Use '<strong>-strip</strong>' to remove trailing white space chars.</p>
</dd>
<dt class="hdlist1">-env NAME | -var NAME </dt>
<dd>
<p>Send the value of environment variable <em>NAME</em> to the spawned process.</p>
</dd>
<dt class="hdlist1">-strip </dt>
<dd>
<p>See option '<strong>-file</strong>'.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_interact_i">interact (i)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect interact</strong> [<em>OPTION</em>] </dt>
<dd>
<p>The '<strong>interact</strong>' sub-command is used to attach to the spawned process and
manually interact with it.
To detach from the process, press <strong>CTRL-]</strong> .</p>
<div class="paragraph">
<p>'<strong>interact</strong>' would fail if it&#8217;s not running on a tty/pty.</p>
</div>
<div class="paragraph">
<p>If the spawned process exits when you&#8217;re interacting with it then '<strong>interact</strong>'
will exit with the same exit code of the spawned process and you don&#8217;t need
to call the '<strong>wait</strong>' sub-command any more.
And the background server will also exit.</p>
</div>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>interact</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-lookback N | -lb N </dt>
<dd>
<p>Show the most recent last <em>N</em> lines of output after attaching to the
process so you&#8217;d know where you were last time.</p>
</dd>
<dt class="hdlist1">-nodetach | -nodet </dt>
<dd>
<p>Disable <strong>CTRL-]</strong>. This may be useful in scripts.</p>
</dd>
<dt class="hdlist1">-re PATTERN </dt>
<dd>
<p>Automatically detach from the spawned process when the output matches
the RE pattern.
After a successful match, you can use '<strong>expect_out</strong>' to get substring
matches.</p>
</dd>
<dt class="hdlist1">-cstring | -cstr | -c </dt>
<dd>
<p>Used with '<strong>-re PATTERN</strong>'.
C style backslash escapes would be recognized and replaced in <em>PATTERN</em>.
See sub-command '<strong>send</strong>' for the list of supported backslash escapes.</p>
</dd>
<dt class="hdlist1">-nocase | -icase | -i </dt>
<dd>
<p>Used with '<strong>-re PATTERN</strong>'.
Ignore case when matching <em>PATTERN</em>.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_wait_w">wait (w)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect wait</strong> </dt>
<dd>
<p>The '<strong>wait</strong>' sub-command waits for the spawned process to complete and
return the spawned process' exit code.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_expect_out_expout_out">expect_out (expout, out)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect expect_out</strong> [&lt; <strong>-index</strong> | <strong>-i</strong>&gt; <em>INDEX</em>] </dt>
<dd>
<p>After the '<strong>expect</strong>' sub-command successfully matches the specified
<em>PATTERN</em>, you can use the '<strong>expect_out</strong>' sub-command to get substring
matches.
Up to <strong>9</strong> (<strong>1-9</strong>) RE substring matches are saved in the server side.
<strong>0</strong> refers to the string which matched the whole <em>PATTERN</em>.
<em>INDEX</em> defaults to <strong>0</strong> if it&#8217;s not specified.</p>
<div class="paragraph">
<p>For example, if the command</p>
</div>
<div class="literalblock">
<div class="content">
<pre>sexpect expect -re 'a(bc)d(ef)g'</pre>
</div>
</div>
<div class="paragraph">
<p>succeeds (exits 0) then the following commands</p>
</div>
<div class="literalblock">
<div class="content">
<pre>sexpect expect_out -index 0
sexpect expect_out -index 1
sexpect expect_out -index 2</pre>
</div>
</div>
<div class="paragraph">
<p>would output <strong>abcdefg</strong>, <strong>bc</strong> and <strong>ef</strong>, respectively.</p>
</div>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_chkerr_chk_ck">chkerr (chk, ck)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect chkerr</strong> <strong>-errno</strong> <em>NUM</em> <strong>-is</strong> <em>REASON</em> </dt>
<dd>
<p>If the previous '<strong>expect</strong>' sub-command fails, the '<strong>chkerr</strong>' sub-command
can be used to check if the failure is caused by <strong>EOF</strong> or <strong>TIMEOUT</strong>.</p>
<div class="paragraph">
<p>See the '<strong>expect</strong>' sub-command for an example.</p>
</div>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>chkerr</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-errno NUM | -err NUM </dt>
<dd>
<p><em>NUM</em> is the exit code of the previous failed '<strong>expect</strong>' sub-command.</p>
</dd>
<dt class="hdlist1">-is REASON </dt>
<dd>
<p><em>REASON</em> can be '<strong>eof</strong>', '<strong>timeout</strong>'.</p>
</dd>
<dt class="hdlist1">Exit status </dt>
<dd>
<p><strong>0</strong> will be returned if the specified error <em>NUM</em> is caused by the
<em>REASON</em>.
<strong>1</strong> will be returned if the specified error <em>NUM</em> is <strong>NOT</strong> caused by the
<em>REASON</em>.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_close_c">close (c)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect close</strong> </dt>
<dd>
<p>The '<strong>close</strong>' sub-command closes the spawned process&#8217;s pty by force.
This would usually cause the process to receive <strong>SIGHUP</strong> and be killed.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_kill_k">kill (k)</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect kill</strong> [-<em>SIGNAME</em> | -<em>SIGNUM</em>] </dt>
<dd>
<p>The '<strong>kill</strong>' sub-command sends the specified signal to the spawned
process.
The default signal is <strong>SIGTERM</strong>.</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>kill</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-SIGNAME </dt>
<dd>
<p>Specify the signal with name.
Only the following signal names are supported:</p>
<div class="literalblock">
<div class="content">
<pre>SIGCONT SIGHUP  SIGINT  SIGKILL SIGQUIT
SIGSTOP SIGTERM SIGUSR1 SIGUSR2</pre>
</div>
</div>
<div class="paragraph">
<p>The <em>SIGNAME</em> is case insensitive and the prefix '<strong>SIG</strong>' is optional.</p>
</div>
</dd>
<dt class="hdlist1">-SIGNUM </dt>
<dd>
<p>Specify the signal with number.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_set">set</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect set</strong> [<em>OPTION</em>] </dt>
<dd>
<p>The '<strong>set</strong>' sub-command can be used to dynamically change server side&#8217;s
parameters after '<strong>spawn</strong>'.</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>set</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-autowait FLAG | -nowait FLAG </dt>
<dd>
<p><em>FLAG</em> can be <strong>0</strong>, <strong>1</strong>, <strong>on</strong>, <strong>off</strong>.</p>
<div class="paragraph">
<p>By default, after the spawned process exits, the server side will wait
for the client to call 'wait' to get the exit status of the process and
then the server will exit.</p>
</div>
<div class="paragraph">
<p>When '<strong>autowait</strong>' is turned on, after the spawned process exits it&#8217;ll
be automatically waited and then the server will exit.</p>
</div>
</dd>
<dt class="hdlist1">-nonblock FLAG | -nb FLAG </dt>
<dd>
<p><em>FLAG</em> can be <strong>0</strong>, <strong>1</strong>, <strong>on</strong>, <strong>off</strong>.</p>
<div class="paragraph">
<p>By default, the spawned process will be blocked if it outputs too much
and the client (either '<strong>expect</strong>', '<strong>interact</strong>' or '<strong>wait</strong>') does not read
the output in time.</p>
</div>
<div class="paragraph">
<p>When '<strong>nonblock</strong>' is turned on, the output from the process will not be
blocked so the process can continue running.</p>
</div>
</dd>
<dt class="hdlist1">-idle-close N | -idle N </dt>
<dd>
<p>Set the IDLE value.
See the '<strong>spawn</strong>' sub-command for details.</p>
</dd>
<dt class="hdlist1">-timeout N | -t N </dt>
<dd>
<p>See the '<strong>spawn</strong>' sub-command for details.</p>
</dd>
<dt class="hdlist1">-ttl N </dt>
<dd>
<p>See the '<strong>spawn</strong>' sub-command for details.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="_get">get</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>sexpect get</strong> [<em>OPTION</em>] </dt>
<dd>
<p>Retrieve server side information.</p>
</dd>
</dl>
</div>
<div class="paragraph">
<p>The '<strong>get</strong>' sub-command supports the following options:</p>
</div>
<div class="dlist">
<dl>
<dt class="hdlist1">-all | -a </dt>
<dd>
<p>Get all available information from server side.</p>
</dd>
<dt class="hdlist1">-autowait | -nowait </dt>
<dd>
<p>Get the '<strong>autowait</strong>' flag.</p>
</dd>
<dt class="hdlist1">-nonblock | -nb </dt>
<dd>
<p>Get the '<strong>nonblock</strong>' flag.</p>
</dd>
<dt class="hdlist1">-idle-close | -idle </dt>
<dd>
<p>Get the IDLE value. See '<strong>spawn</strong>' for details.</p>
</dd>
<dt class="hdlist1">-pid </dt>
<dd>
<p>Get the spawned process&#8217;s PID.</p>
</dd>
<dt class="hdlist1">-ppid </dt>
<dd>
<p>Get the spawned process&#8217;s PPID.</p>
</dd>
<dt class="hdlist1">-tty | -pty | -pts </dt>
<dd>
<p>Get the spawned process&#8217;s tty.</p>
</dd>
<dt class="hdlist1">-timeout | -t </dt>
<dd>
<p>Get the current default timeout value.</p>
</dd>
<dt class="hdlist1">-ttl </dt>
<dd>
<p>Get the TTL value. See '<strong>spawn</strong>' for details.</p>
</dd>
</dl>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_environment_variables">ENVIRONMENT VARIABLES</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">SEXPECT_SOCKFILE </dt>
<dd>
<p>See <strong>GLOBAL OPTIONS</strong> for details.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_resources">RESOURCES</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Project home: <a href="https://github.com/clarkwang/sexpect/" class="bare">https://github.com/clarkwang/sexpect/</a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p>expect(1), pty(7), pts(4), glob(3), fnmatch(3)</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_author">AUTHOR</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Written by <a href="mailto:dearvoid@gmail.com">Clark Wang</a> .</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_reporting_bugs">REPORTING BUGS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Report bugs to <a href="mailto:dearvoid@gmail.com">Clark Wang</a> or
open an issue at <a href="https://github.com/clarkwang/sexpect/" class="bare">https://github.com/clarkwang/sexpect/</a></p>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2021-08-05 21:05:45 +0800
</div>
</div>
</body>
</html>
